Abstract
In order to verify the predictions of the 2D high Atwood number potential flow model for the evolution of the shock wave induced Richtmyer-Meshkov instability,1 shock-tube experiments were performed with a single-mode perturbation and two competing bubbles as the initial conditions.2 The experimental results were compared to theoretical model and to numerical simulation. In the present work the dependence of the instability on the Atwood number and the dimensionality of the instability were investigated in a shock tube apparatus. A high speed schlieren photography system were used to monitor the evolution of the unstable contact surface. Different Atwood numbers were achieved by using different gases. The results of those experiments were found to be in very good agreement with the predictions of theoretical model and numerical simulation. These results verify the key elements of the Atwood number scaling of the bubble-merger model used for the prediction of the multi-mode bubble an d spike front evolution at all Atwood numbers. The dimensionality investigation of the instability evolution was done using a pyramid like initial perturbation. The results reveal the same two key elements of the bubble-merger model to describe the bubble and spike front evolution as in the 2D case2 except for different scaling constants.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Pages | 798-806 |
| Number of pages | 9 |
| Volume | 4183 |
| DOIs | |
| Publication status | Published - 2001 |
| Event | 24th International Congress on High-Speed Photography and Photonics - Sendai, Japan Duration: Sep 24 2000 → Sep 29 2000 |
Other
| Other | 24th International Congress on High-Speed Photography and Photonics |
|---|---|
| Country | Japan |
| City | Sendai |
| Period | 9/24/00 → 9/29/00 |
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Keywords
- High speed photography
- Hydrodynamic instability
- Richtmyer-Meshkov instability
- Schlieren photography
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
The dependence of the Richtmyer-Meshkov instability on the atwood number and dimensionality - Theory and experiments. / Sadot, O.; Yosef-Hai, A.; Oron, Dan; Rikanati, A.; Kartoon, D.; Arazi, L.; Elbaz, Y.; Sarid, E.; Ben-Dor, G.; Shvarts, D.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4183 2001. p. 798-806.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - The dependence of the Richtmyer-Meshkov instability on the atwood number and dimensionality - Theory and experiments
AU - Sadot, O.
AU - Yosef-Hai, A.
AU - Oron, Dan
AU - Rikanati, A.
AU - Kartoon, D.
AU - Arazi, L.
AU - Elbaz, Y.
AU - Sarid, E.
AU - Ben-Dor, G.
AU - Shvarts, D.
PY - 2001
Y1 - 2001
N2 - In order to verify the predictions of the 2D high Atwood number potential flow model for the evolution of the shock wave induced Richtmyer-Meshkov instability,1 shock-tube experiments were performed with a single-mode perturbation and two competing bubbles as the initial conditions.2 The experimental results were compared to theoretical model and to numerical simulation. In the present work the dependence of the instability on the Atwood number and the dimensionality of the instability were investigated in a shock tube apparatus. A high speed schlieren photography system were used to monitor the evolution of the unstable contact surface. Different Atwood numbers were achieved by using different gases. The results of those experiments were found to be in very good agreement with the predictions of theoretical model and numerical simulation. These results verify the key elements of the Atwood number scaling of the bubble-merger model used for the prediction of the multi-mode bubble an d spike front evolution at all Atwood numbers. The dimensionality investigation of the instability evolution was done using a pyramid like initial perturbation. The results reveal the same two key elements of the bubble-merger model to describe the bubble and spike front evolution as in the 2D case2 except for different scaling constants.
AB - In order to verify the predictions of the 2D high Atwood number potential flow model for the evolution of the shock wave induced Richtmyer-Meshkov instability,1 shock-tube experiments were performed with a single-mode perturbation and two competing bubbles as the initial conditions.2 The experimental results were compared to theoretical model and to numerical simulation. In the present work the dependence of the instability on the Atwood number and the dimensionality of the instability were investigated in a shock tube apparatus. A high speed schlieren photography system were used to monitor the evolution of the unstable contact surface. Different Atwood numbers were achieved by using different gases. The results of those experiments were found to be in very good agreement with the predictions of theoretical model and numerical simulation. These results verify the key elements of the Atwood number scaling of the bubble-merger model used for the prediction of the multi-mode bubble an d spike front evolution at all Atwood numbers. The dimensionality investigation of the instability evolution was done using a pyramid like initial perturbation. The results reveal the same two key elements of the bubble-merger model to describe the bubble and spike front evolution as in the 2D case2 except for different scaling constants.
KW - High speed photography
KW - Hydrodynamic instability
KW - Richtmyer-Meshkov instability
KW - Schlieren photography
UR - http://www.scopus.com/inward/record.url?scp=17944373142&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=17944373142&partnerID=8YFLogxK
U2 - 10.1117/12.424357
DO - 10.1117/12.424357
M3 - Conference contribution
VL - 4183
SP - 798
EP - 806
BT - Proceedings of SPIE - The International Society for Optical Engineering
ER -